Lux lumen converter11/12/2023 What is the luminous flux on a surface of 4 square meters and illuminance of 500 lux?Ĭurrently, we have around 5661 calculators, conversion tables and usefull online tools and software features for students, teaching and teachers, designers and simply for everyone. In lumens (lm) is equal to the illuminance E v in lux (lx) times 4 times pi times the squared sphere radius r in meters (m): Lux (lx) times the surface area A in square meters (m 2):įor a spherical light source, the area A is equal to 4 times pi times In lumens (lm) is equal to the illuminance E v in Lm = 0.09290304 × lx × ft 2 Lux to lumens calculation with area in square meters Lux (lx) times 4 times pi times the squared sphere radius r in feet (ft): So the luminous flux Φ V in lumens (lm) is equal to 0.09290304 times the illuminance E v in Φ V(lm) = 0.09290304 × E v(lx) × A (ft2 )įor a spherical light source, the area A is equal to 4 times pi times the squared sphere radius: Lux (lx) times the surface area A in square feet (ft 2): The luminous flux Φ V in lumens (lm) is equal to 0.09290304 times the illuminance E v in Lux to lumens calculation formula Lux to lumens calculation with area in square feet Lux to lumens calculation with area in square meters.Lux to lumens calculation with area in square feet.Lux and lumen units represent different quantities, so you can't convert lux to lumens. You can calculate lumens from lux and surface area. Where the lumens provided by a given emitter are the same, light that travels less distance and/or is more narrowly focused will appear brighter because lux are concentrated in a smaller area than light that has traveled a greater distance and has been dispersed over a wider area. Therefore, the amount of lux in an area or on a surface can vary depending upon the distance the light travels and the angle at which it is dispersed. The further the light has to travel the more it will be dispersed. Essentially, as light travels from the emitter, it will disperse throughout an area. ![]() One lux is equal to one lumen per square meter (lux = lumens/m 2). Typically, the more lumens a light fixture provides, the brighter it is. Lumens = The total output of visible light from a light source is measured in lumens. ![]() ![]() This can be thought of as light intensity within a specific area. Lux = The amount of light that is cast on a surface is called illuminance, which is measured in lux. How to convert illuminance in lux (lx) to luminous flux in lumens (lm).
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